diff --git a/Android.mk b/Android.mk
index 53f9836070..259dabe571 100644
--- a/Android.mk
+++ b/Android.mk
@@ -350,3 +350,26 @@ LOCAL_STATIC_LIBRARIES += libz
 LOCAL_LDLIBS := -lpthread
 
 include $(BUILD_HOST_EXECUTABLE)
+
+# To test java proto params build rules.
+# =======================================================
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := aprotoc-test-nano-params
+LOCAL_MODULE_TAGS := tests
+LOCAL_SDK_VERSION := current
+
+LOCAL_PROTOC_OPTIMIZE_TYPE := nano
+
+LOCAL_SRC_FILES := \
+        src/google/protobuf/unittest_import_nano.proto \
+        src/google/protobuf/unittest_simple_nano.proto \
+        src/google/protobuf/unittest_stringutf8_nano.proto \
+        src/google/protobuf/unittest_recursive_nano.proto \
+        src/google/protobuf/unittest_enum_multiplejava_nano.proto
+
+LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/src
+
+LOCAL_PROTO_JAVA_OUTPUT_PARAMS := java_package=$(LOCAL_PATH)/src/google/protobuf/unittest_import_nano.proto|com.google.protobuf.nano,java_outer_classname=$(LOCAL_PATH)/src/google/protobuf/unittest_import_nano.proto|UnittestImportNano
+
+include $(BUILD_STATIC_JAVA_LIBRARY)
diff --git a/java/README.txt b/java/README.txt
index 8ebc9fbc5e..dac2e3c9ea 100644
--- a/java/README.txt
+++ b/java/README.txt
@@ -324,7 +324,8 @@ Please run the following steps to test:
 - cd ../../..
 - . build/envsetup.sh
 - lunch 1
-- "make -j12 aprotoc libprotobuf-java-2.3.0-nano" and check for build errors.
+- "make -j12 aprotoc libprotobuf-java-2.3.0-nano aprotoc-test-nano-params" and
+  check for build errors.
 - repo sync -c -j256
 - "make -j12" and check for build errors